Digestive Diseases and Sciences

, Volume 56, Issue 4, pp 1037–1046 | Cite as

5-Aminosalicylic Acid (5-ASA) Can Reduce Levels of Oxidative DNA Damage in Cells of Colonic Mucosa With and Without Fecal Stream

  • Caroline Caltabiano
  • Felipe Rodrigues Máximo
  • Ana Paula Pimentel Spadari
  • Daniel Duarte da Conceição Miranda
  • Marcia Milena Pivatto Serra
  • Marcelo Lima Ribeiro
  • Carlos Augusto Real Martinez
Original Article



No studies have evaluated the effectiveness of 5-ASA against oxidative DNA damage in experimental models of diversion colitis.


To evaluate the effects of 5-ASA against oxidative DNA damage in an experimental model of diversion colitis.


Twenty-six Wistar rats were divided into two groups corresponding to sacrifice at 2 or 4 weeks after fecal diversion of the left colon by means of proximal colostomy and distal mucosa fistula. Each group was divided into two subgroups according to intervention in excluded colon performed with 0.9% saline solution or 5-ASA. Level of oxidative DNA damage was determined by comet assay in cells obtained from segments with and without fecal stream before and after H2O2 challenge. For statistical analysis, was used one-way analysis of variance (ANOVA), adopting a 5% significance level (P < 0.05).


Levels of DNA damage were always higher in colon segments without fecal stream, regardless of the intervention solution employed. DNA damage in colon segments with and without fecal stream in animals irrigated with 5-ASA was lower when compared with those treated with saline solution, regardless of time of irrigation. These levels remained lower after intervention with 5-ASA, even after H2O2 challenge.


Enema with 5-ASA reduces oxidative DNA damage in epithelial cells of colon segments without fecal stream, even after H2O2 challenge, confirming the effects of 5-ASA against DNA damage by oxygen free radicals.


Colitis Mesalamine 5-Aminosalicylic acid Fatty acids Volatile Butyrates Rats 



C.A.R.M. thanks the Fundação de Amparo a Pesquisa do Estado de São Paulo (FAPESP) for financial support. Process. N°. 2006/02306-6.

Financial support

Fundação de Amparo a Pesquisa do Estado de São Paulo (FAPESP), São Paulo, Brazil.


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Copyright information

© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  • Caroline Caltabiano
    • 1
    • 4
  • Felipe Rodrigues Máximo
    • 2
    • 5
  • Ana Paula Pimentel Spadari
    • 2
    • 5
  • Daniel Duarte da Conceição Miranda
    • 3
    • 6
  • Marcia Milena Pivatto Serra
    • 1
    • 6
  • Marcelo Lima Ribeiro
    • 1
    • 6
  • Carlos Augusto Real Martinez
    • 1
    • 7
  1. 1.Post-Graduate Program in Health SciencesSão Francisco University Medical SchoolBragança PaulistaBrazil
  2. 2.São Francisco University Medical HospitalBragança PaulistaBrazil
  3. 3.São Francisco University Medical SchoolBragança PaulistaBrazil
  4. 4.Vila São Francisco, São PauloBrazil
  5. 5.São José dos CamposBrazil
  6. 6.Bragança PaulistaBrazil
  7. 7.Santo AndréBrazil

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